Portable heater



(No Model.)

W. HARLEY.

'PORTABLE HEATER.

No. 408,469. Patented Augi 6, 1,889..

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UNITED STATES PATENT OFFICEe IVILLIAM HARLEY, OF PHILADELPHIA,PENNSYLVANIA.

PORTABLE HEATER.

SPECIFICATION forming part of Letters Patent No. 408,469, dated August6, 1889.

Serial No. 283,418. (No model.)

To @ZZ whom it may concern:

Be it known that I, WILLIAM EARLEY, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inPortable Heaters; and I do declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to the letters andfigures of reference marked thereon, which form a part of thisspecification.

My invention has relation to portable heat ers, and has for its objectthe provision of a heater of novel for m and construction, wherein agreater area of radiating-surface is exposed to the air passing throughthe air-heating space of the furnace than in heaters of theordinaryconstruction, and without increasing the 'capacity of thefire-box or the consump' tion of fuel.

I-Ieretofore in heaters of the above class the products of combustionhave in some cases been caused to pass directly7 from the tire-box tothe chimney, while in others said products pass through a series ofvertical or horizontal drums arrangedwithin a suitable air-chamber, theair therein passing` directly from its inlet toits outlet before itbecomes thoroughly heated.

In carrying my invention into veffect I employ a series of horizontaldrums or pipes so arranged relatively to the iirebox of the heater andthe chimney that the products of combustion will pass to and fro on bothsides of the tire-box from a point in the rear of the same to a point infront or in a line with. the front of the fire-box, and will descendfrom'one such horizontal drum or pipe to the one next below, thustraveling in an opposite direction to the direction of the incoming coldair.

In addition to the horizontal drums or pipes arranged as abovedescribed,I provide a series of horizontal metallic partitions soarranged between adjacent drums as to divide the air-space of the heaterinto a number of horizontal passages communicating with each other atalternate ends, so that the incoming cold air will be caused to follow asinuous path around and with said drums, thus thorment of the pipes ordrums for conveying the products of combustion from the fire-box to thechimney, in the novel construction and arrangement of the lues orpassages for conveying the incoming cold air through the airspace, andin the novel construction, combination, and arrangement of partshereinafter described and specifically claimed.

Referring to the accompanying drawings, Figure l is a perspective viewof myimproved portable heater with a portion of the exterior casingbroken away and one of the horizontal partitions of the air-spaceremoved to show the arrangement of the smoke-pipes, and Fig. 2 avertical longitudinal sectional View of the same.

As shown in the drawings, the heater-casing is in the form of aparallelogram, for the reason that it permits of the properarrangementof pipes and iiues necessary to the accomplishment of theobjects of my invention within a comparatively small space.

A designates the base of the heater, consisting of a cast-iron framewith sheet-iron sides and ends andhaving a suitable air-inlet a andash-pan door a.

B designates the nre-box, comprising a cylindrical metallic shell linedwith fire-brick and provided with the usual grate, ash-box,&c.

C designates the exterior casing of the heater, conforming in shape tothe base A and provided with the dome C and hot-air iiues C2 C3 O4.

The fire-box B is arranged as closely as may be convenient to one end ofthe casing, and having extending from near the top and at the rear ofthe same a horizontal smoke-pipe D, that is divided near its rear end bya vertical partition d. Upon each side and near the rear end of pipeDare laterally and downwardly projecting pipes E E, jointed t-ohorizontal pipes F F, that extend forward to or nearly to the front ofthe heater, passing between the fire-box B and the exterior cas ing C.

At their forward ends the pipes F F com IOO municate, by short verticalpipes G G, with horizontal pipes H H, which extend from the front tonear the end of the casing C,parallel with and of the same length aspipe E, and are connected by a horizontal pipe I at right anglestherewith, and having at its center a vertical pipe K, with a horizontalconnection L, leading out through the casing C to the chimney. Thedirection of travel of the products of combustion through the pipes D EE F F G G H II I K to the chimney is indi.

cated by the arrows therefor in dotted lines. The object of the verticalpartition d in the pipeD is to divide the products of combustion asevenly as possible between the pipes on each side of the iire-box.

The base A is surrounded by a plate A', having ports a2 a2 near thefront of the heater for the admission of air which has become partiallyheated in its passage through the base and between the grate andash-pan. Parallel with the plate A', I arrange a sheetmetal partition M,which extends over the pipes H H from the front of the exterior casing Calmost to the back of the same, leaving a space m between the rear edgeof said partition and said casing for the passage of the air into thenext-above space, said partition also being formed with suitable holesfor the passage of the vertical pipes G G K and the lire-box B.

Above the horizontal pipes F F is arranged a second horizontal partitionh that extends from the rear of the exterior casing almost to the frontof the same, leaving a space m similar to space m between the front edgeof this partition and said casing, allowing of the passage of the nowhot air into the dome C'. Said partition M' also is formed with holesfor the passage of the iire-boxB and the slanting pipes E E.

rlhe horizontal partitions M M', in connection with the plate A' and thedome C of the heater, divide the air-space of the heater into horizontalIiues communicating with each other at alternate ends, and through whichthe air follows a sinuous path in opposite directions to the products ofcombustion and all the while in contact with the pipes through which thelatter is conveyed.

The direction of travel of the products of combustion, as beforesuggested, is indicated by dotted arrows in the drawings, while that ofthe air-currents is indicated by full arrows. By the employment of thehorizontal smoke-pipe and the horizontal partitions I claim that withinthe same cubical space a much larger extent of effectiveradiating-surface is obtainable than where the smoke or combustion luesare constructed and arranged as in the ordinary manner-that is, in avertical position and without the horizontal partitions which I employ.

W'hile I have shown and described but two sets of horizontal pipes FF GG and but two horizontal partitions M M', it is obviously within thespirit of my invention to increase the numbers of pipes and partitions,if found necessary or expedient; but I prefer the arrangementspecifically shown and described.

I am aware that a heater has heretofore been constructed with a chamberat the rear of the fire-box divided by an S or similarlyshaped sheet ofmetal secured to the sides of said chamber into two broad and shallowtortuous heat and air passages of similar curvature, and having in theirconcavities shelves secured to said sides. Therefore I do not wish to beunderstood as claiming, broadly, such a construction; but t Vhat I doclaim, and desire to secure by Letters Patent, is-

In a portable heater, the combination, with the hre-box B in the casingC, having the dome C',with hot-air outlets,mounted on the base A, withthe cold-air inlet a, of the pipe D, with the partition d therein,leading from 'the rear of said fire-box and communicating with thebranches E E of the pipes F F, which pipes communicate with the branchesG G of the pipes H H, which latter communicate with thesmoke-outletLthrough the pipe I and its branch K, the plate A', mountedon the base A, and the plates M M', sustained in the casing C, havingtheinlets a2, m, and m' at alternate ends, as and for the purposedescribed.

In testimony whereof I aiiix my signature in presence of two witnesses.

WILLIAM EARLEY. Witnesses:

Jos. B. CoNNoLLY, THEO. H. MCALLA.

